Managing electronic messages sent to mobile devices associated with electronic messaging accounts

ABSTRACT

A graphical user interface on a display device of a computer enables communications using a computer service. The graphical user interface includes a list of potential message recipients selected by a user as significant to the user. The graphical user interface also includes a mobile device identifier associated with one or more of the listed potential message recipients and a user account identifier associated with one or more of the listed potential message recipients. At least one of the listed potential recipients includes a mobile device identifier as the only available conduit for data delivery to the potential message recipient using the computer service.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. application Ser. No.14/322,834, filed Jul. 2, 2014, which is a continuation of U.S.application Ser. No. 13/442,226, filed Apr. 9, 2012, which is acontinuation of U.S. application Ser. No. 12/548,338, filed Aug. 26,2009 and now U.S. Pat. No. 8,156,193, which is a continuation of U.S.application Ser. No. 10/895,421, filed Jul. 21, 2004 and now U.S. Pat.No. 7,590,696, which claims the benefit of U.S. Provisional ApplicationNo. 60/488,376, filed Jul. 21, 2003, and claims the benefit of U.S.Provisional Application No. 60/488,749, filed Jul. 22, 2003, is acontinuation-in-part of U.S. application Ser. No. 10/723,040, filed Nov.26, 2003 and now U.S. Pat. No. 7,428,580, and is a continuation-in-partof U.S. application Ser. No. 10/715,213, filed Nov. 18, 2003 and nowU.S. Pat. No. 8,701,014, which claims the benefit of U.S. ProvisionalApplication No. 60/426,806, filed Nov. 18, 2002, and claims the benefitof U.S. Provisional Application No. 60/427,566, filed Nov. 20, 2002, andclaims the benefit of U.S. Provisional Application No. 60/456,963, filedMar. 25, 2003. Each of the aforementioned patent(s) and application(s)is hereby incorporated by reference in its entirety.

TECHNICAL FIELD

This description relates to communicating using an instant messagingsystem.

BACKGROUND

Users of an instant messaging service can communicate virtually in realtime with other instant messaging users. Users may manually create abuddy list of user names of other users of the instant messagingservice, and may establish instant messaging sessions with those othermembers using the buddy list.

Many people have multiple instant messaging accounts that they use fordifferent identities or personalities. Conventionally, people onlyappeared online with one account at a time, unless multiple instantmessaging clients were run. Therefore, only the buddy list correspondingto the account that was used to sign into the instant messaging systemwas shown. Similarly, messages could only be sent to and from theaccount that was used to sign in.

DESCRIPTION OF DRAWINGS

FIG. 1 is a block diagram of a communications system.

FIGS. 2 and 3 are expansions of the block diagram of FIG. 1.

FIGS. 4A-4C, 5A and 11 are illustrations of exemplary interfaces forshowing buddy lists for multiple linked instant messaging accounts.

FIG. 5B is an illustration of an exemplary interface for managingmultiple linked accounts.

FIGS. 6A-6D are illustrations of an exemplary interface for linking andunlinking accounts.

FIG. 7 is a flow chart of an exemplary process for linking accounts.

FIGS. 8A and 8B are diagrams of exemplary relationships between linkedaccounts.

FIGS. 9A and 9B are illustrations of exemplary interfaces for signinginto an instant messaging system with a linked account.

FIG. 10 is a flow chart of an exemplary process for logging into aninstant messaging system.

FIGS. 12A-12D and 13A-13C are illustrations of an exemplary interfacefor sending communications to and from a linked account.

FIGS. 14A and 14B are flow charts of exemplary processes forcommunicating from a linked account.

FIG. 15 is a flow chart of an exemplary process for forwarding instantmessages to a client.

FIG. 16A is an illustration of an exemplary notification that aspecified action has been performed by a buddy of one of the linkedaccounts.

FIG. 16B is an illustration of an exemplary interface for specifyingactions.

FIG. 17 is a block diagram of a communications system.

FIGS. 18A-18D are illustrations of exemplary interfaces for managing andshowing buddy lists for mobile telephone identities.

FIGS. 19 and 21A-21D are diagrams for processes for communicatingbetween a client system and a mobile telephone.

FIG. 20 is a diagram of an exemplary data structure for message sessioninformation.

FIGS. 22 and 23 are illustrations of exemplary messages that may be sentbetween a client system and a mobile telephone.

Like reference symbols in the various drawings may indicate likeelements.

DETAILED DESCRIPTION

A buddy list is a user-definable list of other co-users (i.e., buddies)of an online or network communications systems that enables the user toperceive presence information and changes for the co-users in a uniquegraphical user interface (GUI) and to track changes to presence statusfor the co-users in substantially real-time automatically, wherepresence indicates the status of the co-user with respect to the onlineor network communications system. The buddy list also provides the userwith a mechanism to initiate communications (e.g., instant messages(IMs), electronic mail (e-mail), chat, and other communications) withthe co-users. A user may create separate buddy lists of co-users, eitherwith intersecting or disjoint lists of users, and label these buddylists according to the user's preferences or otherwise.

Each user account may have one or more buddy lists. When a user logs onto a system, the user's set of buddy lists is presented to a buddy listsystem. The buddy list system attempts to match co-users currentlylogged into the system with the entries on the user's buddy list. Anymatches are displayed to the user. As co-users logon and logoff, auser's buddy list is updated to reflect these changes. An indicationalso may be added to show that a co-user just logged on or logged offthe system.

In one exemplary implementation, a user may identify a mobile telephonenumber to be added to the user's buddy list. The mobile telephone numberalso may be assigned a surrogate identifier or alias (e.g., a name) tobe displayed on the user's buddy list to help the user identify theidentity associated with the mobile telephone number. A user may addressan instant message to the mobile telephone number added to the buddylist in lieu of addressing an instant message to a screen name.

In another exemplary implementation, a user may link multiple accountsthat are held by the user for use in a communications system, such as aninstant messaging system. Each of the multiple accounts held by the sameuser may be identified by a different unique identifier (e.g., a screenname, a number, a user identity, or other alphanumeric string). Bylogging into one of the linked accounts, the linked accounts all mayappear to be logged into the communications system simultaneously. Theuser can send and receive communications from each linked account allwhile appearing to other users as the particular identity that the useris known to by others. As a result, the user appears to be online moreoften and has the potential to receive more communications.

A primary account is chosen by the user to sign in to the communicationssystem. After the primary account is authenticated, a single GUI shows abuddy list, or a list containing the users of the communications systemwith which communications regularly occur, for the primary account andeach of the linked accounts. Thus, by signing onto a single account, theuser's other linked accounts also may be started. The GUI may separatethe buddy lists for the multiple linked accounts. In one implementationto be described with respect to FIGS. 4A and 4B, only the buddy listsfor one of the linked accounts is shown at a time with the buddy listsfrom other accounts hidden or minimized. In another implementation to bedescribed with respect to FIG. 4C, more than one of the buddy lists fromthe linked accounts may be simultaneously displayed to the user. Theuser may make modifications to the buddy list when it is displayed. TheGUI also contain an element for accessing a control panel through whichthe accounts to be linked can be specified. The control panel allows theuser to add an account to be linked by enabling the entry ofauthentication information for the account to be linked.

After authentication, communications to and from the account to belinked may occur. A communication interface enables the specification ofa linked account from which the communications are sent to a recipientof the communications. If the communications with the recipient from theselected linked account are allowed to occur, the communications aresent. Also, communications directed to any of the linked accounts may bereceived and made perceivable to the user. When a message is received,the account to which the message was sent is determined, and theresponse to the message is configured to automatically send from thataccount. Notifications of the status of users listed on the buddy listsfor the linked accounts are also presented. The notifications specifythe account whose buddy list contains the user whose status meritednotification.

For illustrative purposes, FIGS. 1-3 show an example of a communicationssystem for implementing techniques for transferring electronic data. Forbrevity, several elements in the figures described below are representedas monolithic entities. However, as would be understood by one skilledin the art, these elements each may include numerous interconnectedcomputers and components designed to perform a set of specifiedoperations and/or may be dedicated to a particular geographical region.

Referring to FIG. 1, a communications system 100 is capable ofdelivering and exchanging data between a requestor system 105 and aprovider system 110 through a communications link 115. The requestorsystem 105 may include a client system and the provider system 110 mayinclude a host system. The requestor system 105 typically includes oneor more requestor devices 120 and/or requestor controllers 125, and theprovider system 110 typically includes one or more provider devices 135and/or provider controllers 140. For example, the requestor system 105or the provider system 110 may include one or more general-purposecomputers (e.g., personal computers), one or more special-purposecomputers (e.g., devices specifically programmed to communicate witheach other and/or the requestor system 105 or the provider system 110),or a combination of one or more general-purpose computers and one ormore special-purpose computers. The requestor system 105 and theprovider system 110 may be arranged to operate within or in concert withone or more other systems, such as, for example, one or more Local AreaNetworks (“LANs”) and/or one or more Wide Area Networks (“WANs”).

The provider system 110 may include a communication interface such as anelectronic mail gateway. For instance, the provider system 110 mayinclude a dedicated mailing system that is implemented by specializedhardware or executed by a general purpose processor capable of runningvarious applications, such as electronic mailer programs, and capable ofemploying various file transfer protocols, such as the Simple MailTransfer Protocol (“SMTP”). The communications interface of providersystem 110 enables communications between the provider system 110 andother systems through, for example, communications link 115.

The requestor device 120 (or the provider device 135) is generallycapable of executing instructions under the command of a requestorcontroller 125 (or a provider controller 140). The requestor device 120(or the provider device 135) is connected to the requestor controller125 (or the provider controller 140) by a wired or wireless data pathway130 or 145 capable of delivering data.

The requestor device 120, the requestor controller 125, the providerdevice 135, and the provider controller 140 each typically include oneor more hardware components and/or software components. An example of arequestor device 120 or a provider device 135 is a general-purposecomputer (e.g., a personal computer) capable of responding to andexecuting instructions in a defined manner. Other examples include aspecial-purpose computer, a workstation, a server, a device, acomponent, other physical or virtual equipment or some combinationthereof capable of responding to and executing instructions. Therequestor device 120 and the provider device 135 may include devicesthat are capable of peer-to-peer communications.

An example of a requestor controller 125 or a provider controller 140 isa software application loaded on the requestor device 120 or theprovider device 135 for commanding and directing communications enabledby the requestor device 120 or the provider device 135. Other examplesinclude a program, a piece of code, an instruction, a device, acomputer, a computer system, or a combination thereof, for independentlyor collectively instructing the requestor device 120 or the providerdevice 135 to interact and operate as described. The requestorcontroller 125 and the provider controller 140 may be embodiedpermanently or temporarily in any type of machine, component, physicalor virtual equipment, storage medium, or propagated signal capable ofproviding instructions to the requestor device 120 or the providerdevice 135.

The communications link 115 typically includes a delivery network 160making a direct or indirect communication between the requestor system105 and the provider system 110, irrespective of physical separation.Examples of a delivery network 160 include the Internet, the World WideWeb, WANs, LANs, analog or digital wired and wireless telephone networks(e.g., PSTN, ISDN, and xDSL), radio, television, cable, satellite,and/or any other delivery mechanism for carrying data. Thecommunications link 115 may include communication pathways 150 and 155that enable communications through the one or more delivery networks 160described above. Each of the communication pathways 150 and 155 mayinclude, for example, a wired, wireless, cable or satellitecommunication pathway.

An electronic information store 180 may be connected to the providersystem 110, included as a component of the provider system 110, and/orconnected to the delivery network 160. The electronic information store180 may be a repository for electronic information that may be in anindexed and/or searchable format. For example, in one implementation,the electronic information store 180 may be used to store informationrelated to the relationships between the linked accounts of thecommunications system 100.

FIG. 2 illustrates a communications system 200 including a requestorsystem 205 communicating with a provider system 210 through acommunications link 215. Requestor system 205 typically includes one ormore requestor devices 220 and one or more requestor controllers 225 forcontrolling the requestor devices 220. Provider system 210 typicallyincludes one or more provider devices 235 and one or more providercontrollers 240 for controlling the provider devices 235. Thecommunications link 215 may include communication pathways 250 and 255that enable communications through the one or more delivery networks260.

Examples of each element within the communications system of FIG. 2 arebroadly described above with respect to FIG. 1. In particular, theprovider system 210 and communications link 215 typically haveattributes comparable to those described with respect to the providersystem 110 and the communications link 115 of FIG. 1. Likewise, therequestor system 205 of FIG. 2 typically has attributes comparable toand illustrates one possible implementation of the requestor system 105of FIG. 1.

The requestor device 220 typically includes a general-purpose computer270 having an internal or external storage 272 for storing data andprograms such as an operating system 274 (e.g., DOS, Windows™, Windows95™, Windows 98™, Windows 2000™, Windows Me™, Windows XP™, Windows NT™,OS/2, or Linux) and one or more application programs. Examples ofapplication programs include authoring applications 276 (e.g., wordprocessing programs, database programs, spreadsheet programs, orgraphics programs) capable of generating documents or other electroniccontent; client applications 278 (e.g., stand alone e-mail client or AOLclient, CompuServe client, AIM client, AOL TV client, or ISP client, allof which may include a built-in or embedded e-mail or instant messagingclient) capable of communicating with other computer users, accessingvarious computer resources, and viewing, creating, or otherwisemanipulating electronic content; and browser applications 280 (e.g.,Netscape's Navigator or Microsoft's Internet Explorer) capable ofrendering standard Internet content and also capable of supporting aweb-based e-mail client and a web-based instant messaging client.

The general-purpose computer 270 also includes a central processing unit282 (CPU) for executing instructions in response to commands from therequestor controller 225. In one implementation, the requestorcontroller 225 includes one or more of the application programsinstalled on the internal or external storage 272 of the general-purposecomputer 270. In another implementation, the requestor controller 225includes application programs stored in and performed by one or moredevice(s) external to the general-purpose computer 270.

The general-purpose computer also includes a communication device 284for sending and receiving data. One example of the communication device284 is a modem. Other examples include a transceiver, a set-top box, acommunication card, a satellite dish, an antenna, or another networkadapter capable of transmitting and receiving data over thecommunications link 215 through a wired or wireless data pathway 250.The general-purpose computer 270 also may include a TV tuner 286 forreceiving television programming in the form of broadcast, satellite,and/or cable TV signals. As a result, the requestor device 220 canselectively and/or simultaneously display network content received bycommunications device 284 and television programming content received bythe TV tuner 286.

The general-purpose computer 270 typically includes an input/outputinterface 288 for wired or wireless connection to various peripheraldevices 290. Examples of peripheral devices 290 include, but are notlimited to, a mouse 291, a mobile phone 292, a personal digitalassistant 293 (PDA), a MP3 player (not shown), a keyboard 294, a displaymonitor 295 with or without a touch screen input, a TV remote control296 for receiving information from and rendering information tosubscribers, and an audiovisual input device 298.

Although FIG. 2 illustrates devices such as a mobile telephone 292, aPDA 293, and a TV remote control 296 as being peripheral with respect tothe general-purpose computer 270, in another implementation, suchdevices may themselves include the functionality of the general-purposecomputer 270 and operate as the requestor device 220. For example, themobile phone 292 or the PDA 293 may include computing and networkingcapabilities and function as a requestor device 220 by accessing thedelivery network 260 and communicating with the provider system 210.Furthermore, the requestor system 205 may include one, some or all ofthe components and devices described above.

FIG. 3 illustrates a communications system 300 that includes a requestorsystem 305 communicating with a provider system 310 through acommunications link 315. The communications link 315 may includecommunications pathways 350 and 355 that enable communications throughone or more delivery networks 360. Examples of the elements within thecommunications system 300 are broadly described above with respect toFIGS. 1 and 2. In particular, the requestor system 305 and thecommunications link 315 typically have attributes comparable to thosedescribed with respect to the requestor system 105 and 205 and thecommunications links 115 and 215 of FIGS. 1 and 2. Likewise, theprovider system 310 of FIG. 3 typically has attributes comparable to andillustrates one possible implementation of the provider system 110 and210 of FIGS. 1 and 2.

The provider system 310 includes a gateway server 370, an administrative(“admin”) server 372, an authentication server 374, an authenticationdatabase 376, an account linking server 378, an account linking database380, and an instant messaging server 382.

The gateway server 370 communicates with the requestor system 305 overthe delivery network 360 through a web server 384 regarding accountlinking and unlinking actions. In one implementation, the gateway server370 receives account linking and unlinking requests and forwards them tothe admin server 372.

The admin server 372 acts as a clearinghouse for the account linkinginformation management and linked account validation functions. Theadmin server 372 manages the account linking information and profiles inassociation with each screen name. The admin server 372 is configured toprocess requests received from the gateway 370 and saves linkinginformation from successful processes in the account linking database380 through the account linking server 378. Linking information fromunsuccessful processes typically is not stored or saved. The adminserver 372 typically is configured to communicate a response message tothe requestor system 305 through the gateway server 370, web server 384,and delivery network 360.

The authentication server 374 is configured to process and to validateaccount authentication requests from the admin server 372 against theauthentication database 376 and any partner database system 386. Onceaccounts have been validated, the admin server may be configured toupdate that information in the account linking database 389 through theaccount linking server 378. Accounts may be authenticated and validatedon different basis including the presence of a correct account name andpassword. For validated accounts, account attributes may be forwardedfrom the authentication database 376 through the authentication server374 for further use, processing, and/or storage by the admin server 372.For accounts that are not maintained by the provider system 310, theauthentication server 374 is configured to communicate theauthentication requests to an appropriate partner database system 386for authentication and validation.

The account linking server 378 interacts with the account linkingdatabase 380, which stores and maintains user buddy list and accountlinking information. The account linking server 378 is configured tomanage the information flow to and from the account linking database380. The type of information contained in the account linking database380 may include, but is not limited to, users settings of accountlinking information. The account linking information may be organized indifferent manners. In one exemplary implementation, the account linkinginformation is organized by screen name. In other implementations, theaccount linking information may be organized by guid, a uniqueidentifier used in the Open Name Space.

Other types of information contained in the account linking database 380may include a list of alias screen names linked by a particular screenname, linking attributes associated with each screen name (e.g.,timestamp for which an alias account whose password was last changed atthe time when the link is created and default visibility/presencepreferences), and linking profile information (e.g., revalidationinformation and a linking account order).

The instant messaging server 382 is configured to process communicationssent to and received by users of the communications system. The instantmessaging server 382 interacts with the account linking database 380through the account linking server 378 and also interacts with the adminserver 372 to request and receive authentication information using theauthentication server 374 and the authentication database 376. Once auser of the requester system 305 has been authenticated and the user'sdifferent accounts have been linked and the user has been signed-on tothe linked accounts, the user may send and receive communications byinteracting with the instant messaging server 382 using the deliverynetwork 360.

An account is needed to use the communications systems 100, 200, and300. Each account typically has at least one associated screen name. Thescreen name is the identifier of the account that is authenticated by aclient of the communications system. Communications sent throughout thecommunications system are addressed by the screen names of the intendedrecipient accounts.

When a first account is linked to a second account, the first accountmay be called an alias of the second account. In one implementation,either account may be used to sign on to the communications systeminitially and then any other linked accounts may be signed on to thecommunications system automatically. In one exemplary implementation,the aliases of a primary account are signed on to the communicationssystem when the main account is signed on to the communications system.The aliases can send and receive communications in the same way as theprimary account. Through a single client program and a single, commonGUI, communications can be sent substantially simultaneously to and fromthe primary account and the aliases of the primary account.

Preferences for the each of the accounts may be set on an individualaccount basis or on a global basis by setting the preferences in oneaccount and applying them globally in other linked accounts. In oneexemplary implementation, certain preferences, including away messagesand privacy settings, may be set by each of the aliases. All otherpreferences for the alias accounts may be set to be the same as thepreferences for the primary account.

Accounts from multiple communications systems may be linked together.For example, accounts from America Online (AOL), America Online InstantMessenger (AIM), and ICQ may be linked together so that communicationsmay be sent over multiple communications systems using only one clientprogram. In addition, accounts from partner domains may be linked. Forexample, accounts of an online gaming club may communicate using the AIMcommunications system, and the accounts from the gaming club may belinked to AIM accounts such that communications may be sent and receivedby gaming club accounts while not signed into the gaming club on agaming device. Similarly, accounts from a dating service that uses theAIM communications system may be linked to other accounts such that themembers of the dating service can communicate with their dating serviceaccounts while not logged in to the dating service. The architecturedescribed in FIG. 3 is one possible implementation of a communicationssystem, and other implementations for sending communications arepossible.

Referring to FIG. 4A, a buddy list interface 400 displays buddy listsfor all linked accounts. In one exemplary implementation only oneaccount's buddy lists 402 a are shown at a time. The buddy lists 402 aincludes one or more screen names 404 a. For example, the buddy lists402 a include the screen name 404 a, BHeikes8. The screen names 404 aare used to address communications to and from the specified accounts.The screen names 404 a may be separated into one or more groups 406 a.The groups 406 a are listed with a name, a number of people from thegroup that are currently logged in to the communications system, and thetotal number of people in the group. For example, group 406 a is namedAIM, and seven out of the eleven members of the group are logged in tothe communications system.

The buddy list interface 400 includes tabs 408 a-408 e that can be usedto access the buddy lists for the various linked accounts. There is onetab 408 a-408 e for each of the linked accounts. For example, tab 408 ais for an account named AIMUIUser, tab 408 b is for an account namedAOLMember, tab 408 c is for an account named AIMUser, tab 408 d is foran account named AIMUser2, and tab 408 e is for an account namedPersonalsUser@love.com, an account from a partner domain. The buddylists for an account is displayed when the tab for that account isselected. For example, the buddy list 402 a is displayed because the tab408 c for the account named AIMUser has been selected. Referring also toFIG. 4B, selecting the tab 408 a for the account named AIMUIUserdisplays the buddy lists 402 b from for that account. The buddy lists402 b includes multiple screen names, including screen name 404 b forBerndEw, and groups, including group 406 b named Co-Workers, which hastwo out of six members logged in.

A setup button 410 allows for configuration of the currently displayedbuddy list. Selecting the setup button 410 enables the addition anddeletion of screen names, such as screen names 404 a and 404 b, andgroups, such as groups 406 a and 406 b, to the buddy list 402 that iscurrently displayed. In one implementation, adding a screen name to abuddy list of a linked account causes the screen name to be added to thebuddy lists of the other linked accounts. After selecting a screen name404 from the buddy list, selecting an IM button 412 displays aninterface for communicating with the account corresponding to theselected screen name. In one implementation, the user may be given anoption to add one or more linked accounts.

Referring to FIG. 4C, an alternative implementation of the buddy listinterface 400 displays buddy lists for all linked accountssimultaneously. The buddy list interface 400 includes a buddy list 402 afor an account with a screen name AIMUIUser and a buddy list 402 b foran account with a screen name AIMUser. The buddy list 402 a for theaccount with the screen name AIMUIUser is displayed first because thataccount was used to sign in to the communications system. The buddylists 402 a and 402 b include one or more screen names 404 a and 404 b.For example, the buddy list 402 a includes the screen name 404 a,Alexis101, and the buddy list 402 b includes the screen name 404 b,Bheikes8. The buddy lists 402 a and 402 b also may be separated into oneor more groups 406 a. The groups 406 a are listed with a name, a numberof people from the group that are currently logged in to thecommunications system, and the total number of people in the group. Forexample, group 406 a is named Buddies, and two out of the thirteenmembers of the group are logged in to the communications system, whilegroup 406 b is named AIM, and seven out of the eleven members of thegroup are logged in to the communications system.

A setup button 410 allows for configuration of the displayed buddylists. Selecting the setup button 410 enables the addition and deletionof screen names, such as screen names 404 a and 404 b, and groups, suchas groups 406 a and 406 b, to the buddy lists 402 a and 402 b that aredisplayed. In one implementation, adding a screen name to a buddy listof a linked account causes the screen name to be added to the buddylists of the other linked accounts. After selecting a screen name 404from one of the displayed buddy lists 402 a and 402 b, selecting an IMbutton 412 displays an interface for communicating with the accountcorresponding to the selected screen name.

Referring to FIG. 5A, the buddy list interface 400 includes a menu bar502 that includes an option 504 labeled “My AIM.” Selecting the option504 creates a submenu 506. The submenu 506 includes an account linkingoption 508, labeled “Link Accounts.” Selecting the account linkingoption 508 displays an account linking control panel 500 from FIG. 5B.The account linking control panel 500 enables the specification of theaccounts to be linked as well as various preference settings related tothe linked accounts. For example, selecting a linking button 510 enablesthe specification of the accounts to be linked. For each linked account,multiple preference settings related to account visibility and awaymessage are presented on the account linking control panel 500. Presenceinformation for an invisible account may not be seen by other users ofthe communications system. Therefore, if a linked account is set to beinvisible, then other users of the communications system are unable tosee that the account is logged into the system even though the account,and other accounts that are linked to the account, are logged into thesystem. For example, selecting checkbox 512 a will cause the accountnamed LinkedScreenName4 to appear invisible to other users of thecommunications system. Likewise, selecting checkbox 512 b will cause theaccount named LinkedScreenName5 to appear invisible, and selectingcheckbox 514 c will cause the account named LinkedScreenName6 to appearinvisible.

The account linking control panel 500 also enables the specification ofan away message for each of the linked accounts. The away message isdisplayed when an account is logged into but not actively using thecommunications system. Each away message has a name for quick reference,as well as text that is displayed to the other users of thecommunications system. For each linked account, an away message can bechosen and modified using the account linking control panel 500. Forexample, selection box 514 a enables the selection of an away messagefor the account named LinkedScreenName4. The text of the selected awaymessage appears in a text box 516 a, where the text may be modified.Similarly, an away message for the account named LinkedScreenName5 maybe selected using the selection box 514 b, and the text of the selectedaway message may be modified in a text box 516 b. Finally, an awaymessage for the account named LinkedScreenName6 may be selected usingthe selection box 514 c, and the text of the selected away message maybe modified in a text box 516 c.

In other implementations, preferences related to outgoingself-expressions, buddy icons, a block list, a warn list, a buddy list,certificates, privacy, and profiles may be set for each linked accountsuing the account linking control panel 500. In addition, any preferencefor the screen name used to sign in to the instant messaging system maybe set with the account linking control panel 500. Other preferences foreach of the linked accounts are determined by the setting of the accountused to sign in to the instant messaging system. These preferencesinclude presence, idle time, incoming expression settings, typingindicator, time stamp, and font.

A number of accounts less than the total number of linked accounts maybe displayed on the account linking control panel at a time. A backbutton 518 and a next button 520 enable moving between different subsetsof the set of linked accounts such that the preferences for the linkedaccounts in the various subsets may be specified. Any changes made tothe invisibility and away message preferences may be immediately appliedto the current session with the communications system using an applybutton 522. Similarly, any changes that have been made may be discardedby selecting a cancel button 516524 When all desired changes have beenmade, the account linking control panel 500 may be closed by selecting adone button 526.

If no accounts have been linked together, then the account linkingcontrol panel includes only the linking button 510. The other elementsfor setting the visibility and away messages for the linked accounts arenot presented on the account linking control panel 500.

Referring to FIG. 6A, an account linking interface 600 enables thelinking of an account to other linked accounts. The accounts that havebeen linked together are listed on the account linking interface 600.For example, eight accounts named ScreenName1 through ScreenName8 havebeen linked using the account linking interface 600. Selecting an addbutton 602 allows for more accounts to be added to the set of linkedaccounts.

Next to each account listed in the account linking interface 600 is acheckbox that can be used to select the corresponding account. Forexample, a checkbox 604 a is associated with an account namedScreenName1, a checkbox 604 b is associated with an account namedScreenName2, a checkbox 604 c is associated with an account namedScreenName3, a checkbox 604 d is associated with an account namedScreenName4, a checkbox 604 e is associated with an account namedScreenName5, a checkbox 604 f is associated with an account namedScreenName6, a checkbox 604 g is associated with an account namedScreenName7, and a checkbox 604 h is associated with an account namedScreenName8. An unlink button 606 enables the breaking of links from theaccounts that have been selected using the checkboxes 604 a-604 h. Forexample, selecting the checkbox 604 a for the account named ScreenName1and subsequently selecting the unlink button 606 would break the linkbetween the account named ScreenName1 and the other linked accounts. Anoptional confirmation may be presented to verify that the selectedscreen names should be unlinked.

When no accounts have been linked together, only the add button 602 isshown on the account linking interface 600. The list of linked accounts,the checkboxes 604 a-604 h, and the unlink button 606 are not includedin the account linking interface 600.

Referring to FIG. 6B, the account linking interface enables the entry ofauthentication information for an account after the add button 602 hasbeen selected. The screen name of the account to be linked may beentered in a name text field 608, while the password for the account tobe linked may be entered in a password text field 610. After theauthentication information has been entered in the name text field 608and the password text field 610, selecting a save button 612 verifiesthe entered authentication information and creates a link to the otherlinked accounts. A cancel button 614 may be selected to dismiss theaccount linking interface 600 without linking any more accounts. Afterthe cancel button 614 is selected, the list of linked accounts shown inFIG. 6A is presented to the user.

In the event that the entered authentication information is incorrect, anotification will be presented, and the authentication information maybe entered again. If additional authentication information, such as aSecureID code, is needed to authenticate the account, a means forentering the additional information is presented.

Referring to FIG. 6C, after successful authentication of the account tobe linked and creation of a link between the existing linked accountsand the newly linked account, the user is notified of the number ofaccounts that still may be linked to the existing set of linkedaccounts, if such a limit exists. A yes button 616 and a no button 618enable the user to decide if more accounts are to be linked to the setof linked accounts. If the yes button 616 is selected, the name textfield 608 and the password text field 610 are presented again to allowthe user to enter authentication information for the additional accountto be linked. If the no button 618 is selected, the list of linkedaccounts is displayed. The yes button 616 and the no button 618 are onlypresented if the limit on the number of linked accounts has not beenreached. If the limit has been reached, then the user is presented witha message saying that the limit has been reached and that no moreaccounts may be linked. A single confirmation button dismisses themessage and displays the list of linked accounts when selected.

Referring to FIG. 6D, in one implementation, the account linkinginterface 600 may suggest a set of accounts to be linked, thussimplifying the account linking process. The accounts may be suggestedbased on the structure of the accounts for the communications system.For example, a hierarchy may exist where a set of accounts aresubordinate to a master account. In such a case, the account linkinginterface 600 may suggest that the subordinate accounts be linked to themaster account. For example, the account linking interface 600 maysuggest that eight accounts named ScreenName1 through ScreenName8 belinked together. Next to each account listed in the account linkinginterface 600 is a checkbox that can be used to select the correspondingaccount. For example, a checkbox 620 a is associated with an accountnamed ScreenName1, a checkbox 620 b is associated with an account namedScreenName2, a checkbox 620 c is associated with an account namedScreenName3, a checkbox 620 d is associated with an account namedScreenName4, a checkbox 620 e is associated with an account namedScreenName5, a checkbox 620 f is associated with an account namedScreenName6, a checkbox 620 g is associated with an account namedScreenName7, and a checkbox 620 h is associated with an account namedScreenName8. A link button 622 enables the creation of links between theaccounts that have been selected using the checkboxes 620 a-620 h andthe account for which the account linking interface 600 is displayed.For example, selecting the checkbox 604 a for the account namedScreenName1 and subsequently selecting the link button 622 would createa link between the account named ScreenName1 and the account for whichthe account linking interface 600 is displayed. An optional confirmationmay be presented to verify that the selected screen names should belinked. Referring to FIG. 7, a process 700 is used to link multipleaccounts such that communications may be sent simultaneously from thelinked accounts. The process 700 begins when a main account is used tolog into a communications system (702). The account linking controlpanel is accessed so that other accounts may be linked to the mainaccount used to sign in to the communications system (704). The buttonon the account linking control panel for linking an account is selected(706), and the authentication information for the account to be linkedis entered (708). In one implementation, the authentication informationfor the account to be linked may be known already by the main account.For example, an account hierarchy may exist where authenticationinformation may be known by a master account for all of the accountssubordinate to the master account. The account to be linked maysubordinate to the main account, so the authentication information forthe account to be linked may be known already by the main account. Insuch an implementation, the account information for the account to belinked does not need to be entered. If the authentication information iscorrect, then the account is linked to the accounts that have beenpreviously linked. If more accounts are to be linked (710), the buttonfor linking an account is selected (706), and the authenticationinformation for the account to be linked is entered (708). In thismanner, the authentication information is sequentially entered andverified for all of the accounts to be linked.

After all of the accounts to be linked have been entered (710), a listof linked accounts is presented. If any accounts are to be unlinked fromthe rest of the linked accounts, then they are selected from the list(712). The unlink button is pressed to break the links between theselected accounts and the other accounts that remain linked (714).

Referring to FIGS. 8A and 8B, seven accounts 802-814 have been linkedtogether using different relationships between pairs of directly linkedaccounts. The type of relationship used to directly link a pair ofaccounts determines whether a different pair of accounts may beindirectly linked. For example, a bi-directional link exists between theaccounts in FIG. 8A. A bi-directional link is a two-way link such thatlinking a first account to a second account means that the secondaccount also is linked to the first account. Therefore, tworelationships are created with a single link.

Specifically, in FIG. 8A, bi-directional links exist between differentaccounts, and SN1 is linked to SN2, SN3, SN4, and SN5. Thus, when SN1 isused to sign in to the communications system, SN2, SN3, SN4, and SN5appear as aliases of SN1. SN2 is linked to SN1 and SN7, which appear asaliases of SN2 when SN2 is used to sign in to the communications system.SN3 is linked to SN1, which appears as an alias of SN3 when SN3 is usedto sign in to the communications system. Similarly, SN4 is linked toSN1, which appears as an alias of SN4 when SN4 is used to sign in to thecommunications system, and SN5 also is linked to SN1, and SN1 appears asan alias of SN5 when SN5 is used to sign in to the communicationssystem. SN6 is linked to SN7, which appears as an alias of SN6 when SN6is used to sign in to the communications system. Finally, SN7 is linkedto SN2 and SN6, which appear as aliases of SN7 when SN7 is used to signin to the communications system.

In FIG. 8B, one-way linking is used between accounts, so a reflexiverelationship does not necessarily exist between two linked accounts. Fortwo accounts to appear linked to one another, each account has to createa link to the other account. Specifically, in the example, SN1 is linkedto SN3, SN4, and SN5, which appear as aliases of SN1 when SN1 is used tosign in to the communications system. SN2 is linked to SN1, and SN1appears as an alias of SN2 when SN2 is used to sign in to thecommunications system. SN3, SN4, and SN5 are not linked to any otheraccounts and do not have any aliases. SN6 is linked to SN7, so SN7appears as an alias of SN6 when SN6 is used to sign in to thecommunications system. SN7 is linked to SN2, which appears as an aliasof SN7 when SN7 is used to sign in to the communications system.

The description provided above with respect to FIGS. 8A and 8B ispremised on the accounts 802-814 being linked using a star linkingscheme, which dictates that a direct link must exist between twoaccounts before the accounts are linked. On the other hand, two accountsmay appear to be linked even though a direct link between the twoaccounts does not exist. This linking scheme, called mesh linking, callstwo accounts linked if there is an indirect link between the twoaccounts. For example, in FIG. 8B, SN2 and SN4 may be called linkedunder a mesh linking scheme because they are indirectly linked throughSN1. In general, two accounts may be called linked in a mesh-linkingscheme if there exists a path of linked accounts between the twoaccounts.

Referring to FIG. 9A, a sign in interface 900 allows the user to enterthe authentication information needed to log in to the communicationssystem with a primary account. The screen name of the primary accountmay be selected from a selection box 902. Alternatively or additionally,the screen name of the primary account may be typed in the selection box902. The password for the primary account may be entered in the text box904. If the checkbox 906 is selected, then the password for the accountlisted in the selection box 902 is automatically entered in the text box904 from memory. Selecting a checkbox 908 will cause the primary accountto appear as invisible, which prevents other users of the communicationssystem from detecting the presence of the primary account even thoughthe primary account is logged in to the communications system. After thenecessary authentication information has been entered, a sign on button910 is selected. After selecting the sign on button 910, theauthentication information entered on the sign on interface 900 isverified. If additional authentication information, such as a SecureIDcode, is needed, a means for entering the additional information ispresented. If the information is successfully verified, then the buddylist interface 400 is shown for the primary account and all of thelinked accounts.

Referring to FIG. 9B, a dialog box 912 may be presented afterverification of the authentication information and before the buddy listinterface 400 is displayed. The dialog box 912 informs the user that alink to an alias account has been broken because the password for thealias account has changed. The option to relink the alias account to theprimary account is given. A relink button 914 is enables thereestablishment of the link. Selecting the relink button 914 displaysthe account linking interface 600, and the new password for the aliasaccount may be entered. After successful authentication of the newpassword, the link between the primary account and the alias account isreestablished, and the dialog box 912 is dismissed. In oneimplementation, the user may be presented with a separate form or a textbox within dialog box 912 to enter a new password for revalidation of abroken link.

A cancel button 916 dismisses the dialog box 912 without reestablishingthe broken link. The link between the primary account and the aliasaccount remains broken. A dialog box 912 may be presented for each linkfrom the primary account to an alias account that has been broken. Afterall of the broken links have been reestablished or dismissed, and thebuddy list interface 400 is presented.

In another implementation, the link between the primary account and thealias account may be maintained despite a change in the password for thealias account. In such an implementation, the dialog box 912 is notpresented, and the link to the alias account does not need to bereestablished.

Links between accounts also may be broken manually. From the perspectiveof a single user with multiple linked accounts, the user may break anylink between the linked accounts regardless of the linked account usedto sign in to the communications system and regardless of whether thelink is bi-directional. Authentication information for the accountsconnected by the link to be broken may be entered in order to authorizethe destruction of the link. Similarly, from the perspective of multipleusers with multiple linked accounts, a link between an account to whichthe link extends and an account from which the link extends may bebroken by the user corresponding to the account to which the linkextends. A notification may be sent to the account from which the linkextends, and the permission of the account from which the link extendsmay be required for destruction of the link.

Referring to FIG. 10, a process 1000 is used to sign in to acommunications system with multiple linked accounts. The process 1000begins when authentication information for a primary account for signingin to the communications system is entered and verified (1002). Thevisibility of the primary account is checked (1004). If the primaryaccount is to be visible, then the presence of the primary account isannounced to the other accounts that currently are logged in to thecommunications system (1006). If broken links from the primary accountare detected, then the links may be repaired to reestablish a connectionbetween the primary account and an alias account (1008).

Next, a set of accounts that are linked to the primary account,including those accounts that had a broken link repaired, is accessed(1010). One of the linked accounts from the set of linked accounts ischosen (1012). The chosen linked account is authenticated based onauthentication information stored with respect to the primary account(1014). After authentication, the visibility of the linked account ischecked (1016). If the linked account is to appear visible, then thepresence of the linked account is announced to the other accounts thatcurrently are logged in to the communications system (1018).

A determination is made as to whether more accounts to be linked existin the set of linked accounts (1020). If more accounts do exist, alinked account is chosen (1012), the linked account is authenticated(1014), the visibility of the linked account is checked (1016), and thepresence of the linked account is announced if the linked account is tobe visible (1018). In this manner, the accounts that are linked to theprimary account are signed in to the communications system sequentially.Once all of the linked accounts have been signed in to thecommunications system (1020), a buddy list interface displaying thebuddy lists for the primary account and the linked accounts is displayed(1022). Communication can then occur using the primary account and thelinked accounts.

Referring to FIG. 11, a buddy list interface 400 a has been displayedfor a user of a communications system with linked accounts. The user hastwo linked accounts, one with a screen name of AIMUIUser, and one with ascreen name of AIMUser. The buddy list interface 400 a includes a buddylist 402 a for the account with screen name AIMUIUser and a buddy list402 b for the account with the screen name AIMUser. The buddy list 402 ais displayed first because the screen name AIMUIUser was used to sign into the communications system. In addition, two other users, a user witha screen name OtherUser1 and a user with a screen name OtherUser2 arelogged in to the communications system, and the corresponding buddy listinterfaces 400 b and 400 c, respectively, are displayed. OtherUser1 andOtherUser2 do not maintain any linked accounts, so the buddy listinterfaces 400 b and 400 c each only display a single buddy list 402 cand 402 d, respectively. The buddy list 402 c for OtherUser1 includesthe screen name AIMUIUser, which indicates that the account with thescreen name AIMUIUser is logged in to the communications system. Thebuddy list 402 d for OtherUser2 includes the screen name AIMUser, whichindicates that the account with the screen name AIMUser is logged in tothe communications system. Even though the account with the screen nameAIMUser did not directly log in to the communications system, theaccount is still shown as logged in because the account is linked to theaccount with the screen name AIMUIUser, which was used to log in to thecommunications system.

Referring to FIG. 12A, communications may be sent to and from the linkedaccounts using a communications interface 1200. The communicationsinterface 1200 includes a recipient indicator 1202 that indicates arecipient of the messages sent with the communications interface 1200and a sender indicator 1204 that indicates a sender of the messages sentwith the communications interface 1200. For example, the communicationsinterface 1200 is used to send communications from the screen nameOtherUser1 to the screen name AIMUIUser. The communications interface1200 is seen by the user with the screen name OtherUser1 as the usersends messages to the screen name AIMUIUser. The screen name OtherUser1may send messages to the screen name AIMUIUser after seeing the screenname AIMUIUser on the buddy list interface 400 b from FIG. 11. Thescreen name AIMUIUser appeared on the buddy list interface 400 b fromFIG. 11 because the account with the screen name AIMUIUser loggeddirectly in to the communications system.

A message transcript text box 1206 displays the text of the messagessent between the sender and the recipient. Further messages may bespecified in a message text box 1208. Once specified in the message textbox 1208, the message may be sent by selecting a send button 1210.

Referring to FIG. 12B, a different communications interface 1200 isdisplayed for the user with the screen name AIMUIUser after a message issent from the user with the screen name OtherUser1. The communicationsinterface 1200 is used by the user with the screen name AIMUIUser tosend a response to the user with the screen name OtherUser1. Therecipient indicator 1202 indicates that the screen name OtherUser1 isthe recipient of messages sent with the communications interface 1200.Similarly, the sender indicator 1204 indicates that the screen nameAIMUIUser is the sender of messages sent with the communicationsinterface 1200. A message transcript text box 1206 displays the text ofthe messages sent between the sender and the recipient, including theoriginal message sent from the screen name OtherUser1 to the screen nameAIMUIUser. Further messages may be specified in a message text box 1208.Once specified in the message text box 1208, the message may be sent byselecting a send button 1210. Messages may be sent from the account withthe screen name AIMUIUser because the account with the screen nameAIMUIUser was used to log directly in to the communications system.

Referring to FIG. 12C, a communications interface 1200 may be displayedfor the user with a screen name OtherUser2. The communications interface1200 is used to send communications from the screen name OtherUser2 tothe screen name AIMUser. The communications interface 1200 is seen bythe user with the screen name OtherUser2 as the user sends messages tothe screen name AIMUser. The screen name OtherUser2 may send messages tothe screen name AIMUser after seeing the screen name AIMUser on thebuddy list interface 400 c from FIG. 11. The screen name AIMUserappeared on the buddy list interface 400 c from FIG. 11 because theaccount with the screen name AIMUser is linked to the account with thescreen name AIMUIUser, which was used to log directly in to thecommunications system.

A message transcript text box 1206 displays the text of the messagessent between the sender and the recipient. Further messages may bespecified in a message text box 1208. Once specified in the message textbox 1208, the message may be sent by selecting a send button 1210.

Referring to FIG. 12D, a different communications interface 1200 isdisplayed for the user with the screen name AIMUser after a message issent from the user with the screen name OtherUser2. The user with thescreen name AIMUser is the same as the user with the screen nameAIMUIUser because the corresponding accounts are linked. Thecommunications interface 1200 is used by the user with the screen nameAIMUIUser or AIMUser to send a response to the user with the screen nameOtherUser2. The recipient indicator 1202 indicates that the screen nameOtherUser2 is the recipient of messages sent with the communicationsinterface 1200. Similarly, the sender indicator 1204 indicates that thescreen name AIMUser is the sender of messages sent with thecommunications interface 1200. A message transcript text box 1206displays the text of the messages sent between the sender and therecipient, including the original message sent from the screen nameOtherUser2 to the screen name AIMUser. Further messages may be specifiedin a message text box 1208. Once specified in the message text box 1208,the message may be sent by selecting a send button 1210. Messages may besent from the account with the screen name AIMUser because the accountwith the screen name AIMUser is linked to the account with the screenname AIMUIUser, which was used to log directly in to the communicationssystem. Furthermore, the user with the screen names AIMUIUser andAIMUser may transparently send messages using the communicationsinterface 1200 from two linked accounts simultaneously.

Referring to FIG. 13A, a communication interface 1200 has a differentappearance before a first message is sent. The communication interface1200 includes a sender selection box 1302 in which the account that thecommunication is sent from is specified. All communications sent usingthe communication interface 1200 appear to be from the account selectedin the sender selection box 1302. For example, the account with thescreen name AIMUIUser has been selected as the sender of thecommunication, and all communications will appear to be from thataccount. The screen names of all the linked accounts are presented inand may be selected from the sender selection box 1302. An expandedsender selection box 1304 includes the names of all of the linkedaccounts from which the communication interface 1200 may be sent. Theexpanded sender selection box 1304 may be displayed below the senderselection box 1302 when the arrow on the right side of the senderselection box 1302 is selected. The expanded sender selection box 1304also may be displayed below the sender selection box 1302 whenattempting to scroll through the selections included in the senderselection box 1304.

The recipient of the communication is specified using the recipientselection box 1306. For example, the account with the screen nameAIMBuddy has been selected as the recipient of the communication. Thescreen names of possible recipient accounts are presented in and may beselected from the recipient selection box 1306. The screen name of therecipient also may be typed in the recipient selection box 1306. Anexpanded recipient selection box 1308 includes the names of possiblerecipients of messages sent using the communication interface 1200. Theexpanded recipient selection box 1308 may be pre-populated with thenames included in a buddy list for the sender selected in the senderselection box 1302. The expanded recipient selection box 1308 may bedisplayed below the recipient selection box 1306 when the arrow on theright side of the recipient selection box 1306 is selected. The expandedrecipient selection box 1308 also may be displayed below the recipientselection box 1306 when attempting to scroll through the selectionsincluded in the recipient selection box 1306. In one implementation, asthe sender is changed in the sender selection box 1302, the names ofpossible recipients of messages are changed to correspond to the newlyselected sender's buddy list.

Alternatively or additionally, a recipient for the message may be chosenfrom the buddy list interface 400. In this case, the screen name for therecipient may be entered automatically entered in the recipientselection box 1306, and the screen name of the account whose buddy listthe recipient was chosen from may be automatically entered in the senderselection box 1302.

The message to be sent is typed into the message text box 1208. Afterspecification of the sender with the sender selection box 1302, therecipient with recipient selection box 1306, and the message in themessage text box 1208, a send button 1210 is used to send the messagefrom the sender to the recipient.

Referring to FIG. 13B, the appearance of the communication interface1200 changes after the send button 1210 is pressed for the first time.In one exemplary implementation, once the sender and recipient accountshave been specified and one message has been sent from the sender to therecipient, the sender and recipient accounts may not be changed.Therefore, the sender selection box 1302 and the recipient selection box1304 are removed from the communication interface 1200. A recipientindicator 1202 indicates the recipient chosen in the recipient selectionbox 1304, and a sender indicator 1204 indicates the recipient chosen inthe sender selection box 1302. A transcript text box 1206 replaces thesender selection box 1302 and the recipient selection box 1304. Thetranscript text box 1206 includes the text of each message that has beensent between the sender and recipient accounts using the communicationinterface 1200, as well as an indication of whether the sender accountor the recipient account sent the message.

A new message to be sent may be entered in the message text box 1208,and the message may be sent to the specified recipient by selecting thesend button 1210. In addition, the recipient may be added to thesender's buddy list by selecting an add buddy button 1310.

Referring to FIG. 13C, before messages are delivered to the chosenrecipient account from a chosen sender account, a determination is madeas to whether the sender and recipient accounts are allowed to sendmessages to each other. If not, then the message that was specified inthe message text box 1208 is not delivered to the recipient after thesend button 1210 was selected. Instead a message from the communicationssystem appears in the transcript text box 1206 informing the user thatcommunication between the selected sender and recipient accounts may notoccur. In addition, the recipient indicator 1202 indicates thecommunication was intercepted by the communications system, but thesender indicator 1204 still indicates the recipient chosen in the senderselection box 1302.

Communication between two accounts may be denied if the accounts do notbelong to the same domain. For example, if the recipient belongs to agaming club, but the sender does not, then the sender may not be allowedto send messages to the recipient. In general, communication may bedenied if the sender does not have permission to send messages to therecipient or if the recipient denies a request to communicate with thesender.

Referring to FIG. 14A, a process 1400 is used by a sender to initiatecommunications with a recipient. The process 1400 begins when the senderchooses one of the accounts linked to the account used to sign in to thecommunications system to communicate from (1402). Next, the recipient ofthe communications is chosen (1404). The compatibility of the chosensender and recipient accounts is checked to verify that communicationbetween the sender and the recipient is allowed to occur (1406). If so,the sender account is free to send communications to the recipient(1408).

Referring to FIG. 14B, a process 1450 is used to respond to a messagereceived from a user of the communications system. The process 1450begins when a message is received from a user of the communicationsystem by a client program that is running for multiple linked accounts(1452). The intended recipient of the message is determined (1454). Theintended recipient is one of the linked accounts for which the clientprogram is running. A response to the original message is sent from thelinked account to which the original message was addressed (1456). Thedetermination of the intended recipient account of the original messageis automatic. Should a response to the original message be sent, it willautomatically appear to be from the account to which the originalmessage was sent.

Referring to FIG. 15, a process 1500 is used to forward messages tolocations where recipients are available to receive them. Becauseaccounts may be linked, the same account may be signed in to thecommunications system at multiple physical locations. A message is sentto every location where a recipient of the message is signed in to thecommunications system and may be replied to at any of the locationswhere the recipient account is signed in to the communications system.If an away message is up, the message is forwarded to the next locationthat does not have an away message up, where the locations are orderedbased on the time of sign in. If away messages are up at all locationswhere the recipient account is signed in, the message is held at thelocation where the recipient account first signed in to thecommunications system.

The process 1500 begins when a message is received by the communicationssystem (1502). A set of locations at which a recipient of the message issigned in to the communications system is identified (1504). Thelocations are the places where the message may be received by therecipient. The message is sent to one of the set of identified locations(1506). A determination is made as to whether the location is availableto receive the message (1508). In other words, a determination is madeas to whether the location has an away message displayed. If thelocation is available to receive the message because it does not have anaway message displayed, then the message is left at the location (1510).If the location is unable to receive the message because an away messageis up, then it is determined if there is another location that may beavailable to receive the message (1512). If there are no other locationsthat may receive the message, then the message is held at the locationwhere the recipient first signed in to the communications system (1514).Otherwise, the message is forwarded to the next location in the set oflocations, based on the sign in time of the recipient (1516). Adetermination is made again as to whether the location may receive themessage (1512). If so, the message is held at the location (1514).Otherwise it is forwarded to another location if one exists. In thismanner a message may be passed between all of the locations where therecipient is signed in to the communications system so that therecipient can receive and respond to the message.

For example, consider again the linking scenario of FIG. 8A. Imaginethat SN1 was used to sign in at a first location and that SN2 was usedlater to sign in at a second location. SN1 is linked to SN2, SN3, SN4,and SN5, so messages for SN1, SN2, SN3, SN4, and SN5 may be received atthe first location. SN2 is linked to SN1 and SN7, so messages for SN1,SN2, and SN7 may be received at the second location. If the firstlocation has an away message up and the second location does not have anaway message up, then messages sent to SN1 and SN2 are forwarded to thesecond location. If the second location has an away message up, messagesfor SN1 and SN2 are forwarded to the first location, while messages forSN7 are held at the second location, the only place where SN7 is signedin. If both locations are have away messages displayed, then themessages for SN1 and SN2 are held at the first location, where SN1 andSN2 first signed in, and messages for SN7 are held at the secondlocation, where SN7 first signed in.

Referring to FIG. 16A, a notification 1600 is presented after one of aspecified series of events relating to the accounts listed on the buddylists of a set of linked accounts. The header 1602 of the notification1600 contains screen name of the linked account whose buddy listcontains the account that triggered the notification. The body 1604 ofthe notification contains the screen name of the account that triggeredthe notification as well as a description of the event that triggeredthe notification.

Certain actions by the accounts listed in the buddy lists for the linkedaccounts may cause a notification 1600 to appear. The actions includesigning on to the communications system, signing off of thecommunications system, going away from the communications system byputting up an away message, returning from away, going idle by not usingthe communications system for a specified amount of time, and returningfrom idle. Which actions cause a notification to appear, ifnotifications are to appear at all, may be set in the preferencescontrol panel 1650 of FIG. 16B. The section of the preferences controlpanel 1650 that governs when notifications 1600 are displayed may beaccessed by selecting the notifications option 1652 in the list ofpreference categories. The notifications section of the preferencescontrol panel 1650 includes a checkbox 1654 for selecting whethernotifications 1600 should be displayed. Selecting the checkbox 1654causes notifications 1600 to appear when they are triggered.

A series of options 1656-1666 govern which actions lead to the displayof notifications 1600. For example, selecting option 1656 will causenotifications to appear when accounts on the buddy lists for the linkedaccounts sign on to the communications system. Similarly, selectingoption 1658 causes notification to appear when accounts on the buddylists sign off of the communications system. Option 1660 causesnotifications 1600 to appear when accounts go away, and option 1662causes notifications 1600 to appear when accounts return from away.Finally, option 1664 causes notifications 1600 to appear when accountsgo idle, and option 1666 causes notifications 1600 to appear whenaccounts return from idle.

Any changes made to the preferences control panel 1650, includingchanges to the notifications settings, may be saved with an acceptbutton 1668. Selecting the accept button 1668 closes the preferencescontrol panel 1650 and applies the changes made to the preferencescontrol panel. On the other hand, a cancel button 1670 may dismiss thepreferences control panel 1650 without making any of the changes to thesettings that govern when notifications 1600 are shown.

FIG. 17 shows a communications system 1700 that is capable of deliveringand exchanging data between a requestor system 1705 and a providersystem 1710 through a communications link 1715. The communications link1715 may include communications pathways 1750 and 1755 that enablecommunications through one or more delivery networks 1760. The requestorsystem 1705 and communications link 1715 may have characteristicscomparable to and may illustrate one possible implementation of therequestor system 105, 205 and 305 and the communication links 115, 215and 315 of FIG. 1, 2 or 3. The requestor system 1705 also may bereferred to as a client system. Likewise, the provider system 1710 mayhave characteristics comparable to and illustrates one possibleimplementation of the provider systems 110, 210 or 310 of FIG. 1, 2 or3. In general, and in contrast to the depiction of the provider systems110, 210 or 310, the provider system 1710 includes an offline mobileproxy 1740 and a wireless server 1745 configured to enablecommunications between the client system 1705 and a mobile telephonedevice 1770 through the cellular system 1780.

The provider system 1710 includes a desktop instant messaging server1730 that operates instant messaging server software configured toprocess communications sent from and received by users of an instantmessaging service. In particular, the desktop instant messaging server1730 is configured to exchange instant messages and communicationsrelated to the instant message service between the client system 1705and the provider system 1710 over the communication link 1715. Thedesktop instant messaging server 1730 itself may be an implementation ofthe provider systems 110, 210 or 310 of FIG. 1, 2 or 3. In oneimplementation, the desktop instant messaging server 1730 does notinclude an ability to link multiple screen names belonging to a singleuser account. The desktop instant messaging server 1710 includes privacycontrol information 1730A that is used to determine whether a message(or a portion thereof) should be provided to an intended recipient. Theprivacy control information 1730A may be applied to instant messagesand/or text messages sent from the wireless server to the mobiletelephone device 1770 through the cellular system 1780. For example, theprivacy control information 1730A may include rules identified by a userthat are applied to receiving instant messages or text messages by anaccount associated with the user. Undesired words may be entered intoprivacy control information associated with the user and messagesincluding those words may be blocked or the words deleted from themessage, as determined by the user.

The desktop instant messaging server 1710 also includes code segments1730B that enable a user to configure a buddy list associated with aninstant messaging screen name. More particularly, the code segments1730B enable a user to identify a screen name or other type of instantmessaging identifier (such as an ICQ Number or a user accountidentifier) to be added to the user's buddy list, as describedpreviously with respect to FIGS. 4 and 11. The code segments 1730B alsoenable a user to identify a mobile telephone number to be added to theuser's buddy list. The mobile telephone number also may be assigned asurrogate identifier or alias (e.g., a name) to be displayed on theuser's buddy list to help identify the identity associated with themobile telephone number. An instant message may be addressed to themobile telephone number in lieu of addressing an instant message to ascreen name, as described more fully later.

The desktop instant messaging server 1730 also includes code segments1730C to enable a user to configure the user's instant messagingaccount. In particular, the code segments 1730C enable a user toidentify a mobile telephone number to be associated with the user'sinstant messaging user account. The mobile telephone number is stored inassociation with the user account in the user-device registry 1735. Thecode segments 1730C also enable a user to optionally request thatinstant messages be forwarded as text messages to the user's mobiletelephone number when the user is offline—that is, not signed in to theinstant messaging service.

The offline mobile proxy 1740 represents the online presence and/oravailability of a user of the instant messaging system when the user isoffline, thus enabling communications to offline users via alternativecommunication schemes (e.g., SMS text messaging), even if an instantmessaging service is configured to restrict messaging to users whoreflect online presence. The offline mobile proxy 1740 represents to thedesktop instant messaging server 1730 that the user is capable ofreceiving an instant message when the user is actually offline.Accordingly, when the user is offline, their availability may beperceived by others and messages sent to them may be received using analternative communications scheme (e.g., SMS text messaging). Forinstance, an offline user who has registered a mobile device (e.g., acellular telephone) as available to receive messages while they areotherwise offline remains listed as available for messaging on the buddylists of users who subscribe to their online presence. Moreover, aninstant message intended for an offline user is received by the desktopinstant messaging server 1730 and provided to the wireless server 1745,which communicates a text message based on the original instant messageto the mobile telephone device 1770 associated with the offline user.The text message is communicated from the wireless server 1745 to themobile telephone device 1770 thorough the cellular system 1780.

The offline mobile proxy 1740 includes code segments 1740A to manageonline presence information. When the desktop instant messaging server1730 detects that a user has logged off the instant messaging service,the desktop instant messaging server 1730 communicates the status of theuser to the offline mobile proxy 1740, which executes code segment 1740Ato indicate to the desktop instant messaging server 1730 that the useris online. In one implementation, the offline mobile proxy 1740 alsoexecutes code segment 1740A to update, or enable the update of, thescreen name associated with a user to show a mobile indicator adjacentto the user's screen name on each of the buddy lists that include theuser's screen name. The mobile indicator indicates that the user isavailable at their mobile device to receive messages inspired throughmanipulation of the buddy list in the ordinary manner, and alsoindicates that the user is not logged on to the desktop instantmessaging service, as described more fully in FIGS. 18A-18D.

The offline mobile proxy 1740 also includes code segments 1740B that maybe executed by the proxy 1740 to determine whether to forward an instantmessage sent to the mobile telephone device 1770 associated with theintended recipient of the original instant message. In one example, theproxy 1740 executing the code segments 1740B may determine whether auser is associated with a mobile telephone number (such as by accessinguser-device registry 1735), and, if so, whether instant messages shouldbe forwarded to the mobile telephone number conditionally based on auser state (e.g., offline) or request, or unconditionally (e.g., mirrorto the mobile telephone). Accordingly, the proxy 1740 executing the codesegments 1740B may determine to forward the instant message only whenthe user is offline or it instead may determine to forward the instantmessage only when the user has configured the user's account to forwardinstant messages. In yet another example, the proxy 1740 executing thecode segments 1740B may determine that an instant message should beforwarded to a mobile device when the instant message is addressed to amobile telephone number or addressed to a name that is assigned to amobile telephone number. In any event, when the offline mobile proxy1740 determines that an instant message is to be forwarded to a mobiledevice, the instant message is provided to the wireless server 1745.

The wireless server 1745 includes code segments 1745A configured tocreate message session entries for original instant messages and tostore such message session entries in the message session information ina data store 1745B. The message session entry data store 1745B may betransient or persistent storage. The message session information mayinclude a sender screen name, a recipient screen name, a temporary replytelephone number assigned by the wireless server 1745 to facilitate areply to the text message sent to the mobile telephone device 1770, anda recipient mobile telephone number. The sender screen name and arecipient screen name are obtained from the original instant messagereceived by the wireless server 1745. The temporary reply telephonenumber is assigned by the wireless server 1745 from a pool of temporarytelephone numbers. The temporary reply telephone number may be in theform of a short code—that is, a number of lesser or greater digits thanconventional telephone numbers, which nevertheless indicate adestination to the wireless server 1745. When the temporary replytelephone number is such a short code, the cellular system 1780 also mayinclude a process for routing a text message that is sent to one of theshort codes assigned by the wireless system 1745 to the provider system1710. In contrast, the temporary reply telephone number may be afull-length traditional telephone number, or other routing code usefulto enable the cellular system 1780 to route the text message to theprovider system 1710.

The wireless server 1745 also includes code segments 1745C configured toprepare, based on an original instant message, a text message that isbased on the short message service (SMS) protocol, which is particularlyuseful in sending and receiving short text messages to mobile devices,such as mobile telephones. The code segments 1745C include addressingoperations, such as using the user-device register 1735 to identify themobile telephone number of the recipient identified in the instantmessage and addressing the text message to the identified mobiletelephone number, and using the temporary reply telephone number as thesource address in the text message to which replies to the text messageare routed in the form of text messages. The process 1745C also mayinclude converting the instant message to a different character set thatis used by the text message. For example, an instant message may use anASCII character set or a Unicode character set, whereas the text messagemay use a GSM (“Global System for Mobile Communications”) character set.In such a case, the process 1745C also converts the instant message fromthe ASCII or Unicode character set to the GSM character set.

Similarly, the wireless server 1745 also includes code segments 1745Dconfigured to prepare an instant message that corresponds to a replytext message sent from the mobile telephone device 1770 in response tothe text message based on the original instant message. The codesegments 1745D may include code segments configured to convert thecharacter set of the message from a character set used by the textmessage service to the character set used by the instant messageservice. The code segments 1745D also may include addressing operations,which include replacing the destination address of the reply textmessage with the instant messaging account name of the sender of theoriginal instant message. This may be accomplished by accessing themessage session entry created when the original instant message wasforwarded as a text message to the mobile telephone device 1770. Forexample, the message session information may be identified through theuse of the temporary reply telephone number assigned as the destinationaddress of the reply text message. In particular, a message sessionentry may be identified in which the temporary reply telephone number ofthe entry corresponds to the destination address of the reply textmessage and the destination telephone number of the entry corresponds tothe source address of the reply text message. Using both of thetemporary reply telephone number and the destination telephone numbercollectively to identify the message session entry may be useful toenable the concurrent assignment of the same temporary telephone numberfor multiple text messages, which, in turn, may help to reduce thenumber of temporary telephone numbers needed by the wireless server1745.

The code segments 1745D also are configured to determine a sourceaddress to use for the reply instant message. In particular, the codesegments 1745D include addressing operations to determine a sourceaddress, and thus a sender identifier, to associate with the replyinstant message for perception by a recipient of the reply instantmessage. The source address may be determined based on the recipientindicator identified by the sender in the original message such that thesender is only presented with identity information available to thesender at the time when the original message was sent. The following twoexamples illustrate. First, if an instant message initially specified ascreen name as its destination address, replies to that forwardedinstant message similarly specify the screen name as the reply sourceaddress, even if they originate from a mobile device as SMS textmessages. Second and similarly, if a forwarded instant message initiallyspecified a telephone number as its destination address, replies to thatinstant message similarly specify the telephone number as the replysource address. In addition or alternatively, the source address to bereflected for a reply message may be determined, at least in part, basedon information other than the destination address of the originalinstant message specified by the reply recipient, which is determined asavailable to the reply recipient, for example, through an inspection oftheir address book or buddy list. As such, the actual source of thereply (e.g., mobile telephone number or screen name) may not be hiddenfrom users who otherwise are aware of such information. In fact, it maybe advantageous to reveal the actual reply source in addition to thedestination address specified by the reply recipient in their originalmessage, so as to reveal information about the reply source whileproviding the reply recipient some continuity and understanding of thenature of the message as a reply to their original message. For example,the instant message interface may reveal an indication formatted asfollows: “<screen name specified by reply recipient in their originalmessage> (mobile telephone number actually used to generate response)<mobile telephone number>:” or “screen name (sent by 555-1212):”. Theprocess of determining a source address to use as the displayed senderindication of an instant message display for the reply instant messageis described more fully later.

The mobile telephone device 1770 is associated with a mobile telephonenumber to which telephone calls may be routed over the cellular system1780. The mobile telephone device 1770 also may be associated with a SMSaddress that typically is the same as the mobile telephone numberassociated with the mobile telephone device 1770, though this need notnecessarily be so. The mobile telephone device 1770 is capable ofreceiving, displaying, processing, and sending text messages over thecellular system 1780.

The cellular system 1780 may include a cellular network that is capableof transmitting and receiving digital or analog signals using cellulartechnologies, including Advanced Mobile Telephone System (AMPS),Narrowband Advanced Mobile Telephone Service (NAMPS), Frequency ShiftKeying (FSK), Frequency Division Multiple Access (FDMA), Time DivisionMultiple Access (TDMA), and Code Division Multiple Access (CDMA), or anystandard, such as Global System for Mobile Communications (GSM) orCellular Digital Packet Data (CDPD). Alternatively, the cellular system1780 may be any type of telephone network capable of transmitting textmessages to any type of telephone or mobile device.

In general, the communications system 1700A may be used to send aninstant message sent from the client system 1705 to the provider system1710, which transforms the instant message to a corresponding textmessage that is routed over the cellular system 1780 to the mobiletelephone device 1770. The original instant message may be addressed tomobile telephone number of the mobile telephone device 1770, or theoriginal instant message may be addressed to a screen name and forwardedto the mobile telephone device 1770 based on an association, in theuser-device registry 1735, between the screen name and the mobiledevice, and detection of offline status by the mobile device user. Also,the original instant message may be addressed to a screen name that islinked to another screen name, which, in turn, is associated with themobile telephone number of the mobile telephone device 1770.

The user of the mobile telephone device 1770 may reply, or respond, tothe received text message. The reply text message is sent over thecellular system 1780 to the provider system 1710. The provider system1710 transforms the reply text message to a reply instant message thatis presented to the sender of the original instant message. The senderindication displayed for the reply instant message is the same as therecipient indication selected by the sender for the original instantmessage. Thus, the only addressing or account information revealed tothe sender of the original instant message is the information availableto the sender of the original instant message. In some cases, the sourceof a reply message, such as the reply text message or the reply instantmessage, is disguised, hidden or obfuscated so that the addressing oraccount information unknown to the sender is not revealed to the sender.

Referring to FIGS. 18A-18C, interfaces 1800A-1800C are displayed forconfiguring a buddy list associated with user of a communicationssystem. The interfaces 1800A-1800C may be displayed, for example, when aprocess to add a new buddy to a buddy list is initiated by a user andexecuted by a processor. More particularly, FIG. 18A displays aninterface 1800A for adding a new entity as a buddy on a user's buddylist. The interface 1800A includes an option 1810A to add an entityidentified by a screen name, an ICQ number or some other type of instantmessaging identifier, and an option 1810B to add an entity identified bya mobile telephone number to the buddy list associated with the user. Anentity identified by a instant message identifier may be referred to asan instant message entity or a potential message recipient. An entityidentified by a mobile telephone number may be referred to as a mobiletelephone entity, a mobile telephone buddy, a cell phone buddy, or apotential message recipient. Each of the options 1810A and 1810B isselectable by the user using selection indications associated with theoption 1810A or 1810B, respectively, to identify the type of entity(e.g., a mobile telephone entity or an instant messaging entity) to beadded as a buddy to the buddy list. When the user selects to save theentry and thus add an instant messaging entity to the user's buddy list,the interface 1800A includes an entry portion 1820A to which the usermay identify the instant messaging identifier of the entity. Theinterface 1800A also includes a control 1825A to add the entity enteredin the entry portion 1820A to the user's buddy list and to close theinterface 1800A. The interface 1800A also includes a control 1830B tocancel and thus close the interface 1825A without adding an entity tothe buddy list.

FIG. 18B displays an interface 1800B for adding a new entity identifiedby a mobile telephone number as a buddy. As shown, when the user selectsto add a cell phone number to the user's buddy list by selecting thecell phone number option 1815B, the interface 1800A includes an entryportion 1820B to which the user may enter the cell phone number to beadded to the user's buddy list. The entry portion 1820B is partitionedinto separate sections that correspond to parts of a telephone number,though the entry portion 1820B need not necessarily be partitioned. Insome implementations, the same entry portion may be used to enter aninstant message entity and a mobile telephone number entity.

FIG. 18C displays an interface 1800C that presents a message 1810C tothe user, indicating that the mobile telephone number has been saved asa buddy on the user's buddy list. The interface 1800C also presents anname entry portion 1850C configured to accept user input of text to beassigned as a name to be displayed in the buddy list for the mobiletelephone number entered in interface 1800B. It is important to notethat the name displayed for the mobile telephone number is not linked toor otherwise associated with a screen name for a user. Thus, the entryof a mobile telephone number on a user's buddy list may help to enablean instant message user to send an instant message to an entity that isnot otherwise configured to use instant messaging services wherein theprocessor is further configured to use instant messaging services otherthan those used by the sending instant message user, which may or maynot be compatible/integrated with the instant message services used bythe sending instant message user. Moreover, entry of this mobileinformation enables instant message communications with users whosescreen names are unknown to the sender, even if they subscribe to acommon and/or compatible/integrated instant message service.

Referring to FIG. 18D, a buddy list interface 1800D is displayed for auser of a communication system capable of sending instant messages to amobile telephone number that is not associated with a user of theinstant messaging service. The buddy list interface 1800D may be animplementation of the buddy list interface 400 a of FIG. 4 or 11. Thebuddy list interface 1800D includes a buddy list 402 a for an entityhaving screen name AIMUIUser. The buddy list 402 a includes a mobiletelephone entity 1805D for which the mobile telephone number isdisplayed as the entity identifier. The buddy list 402 a also includes amobile indicator 1807D that reflects a mobile telephone number as theonly known means for contacting the entity associated with the name(here, BMVassallo) adjacent to the mobile indicator 1807D. Thus,BMVassallo is an alias for a mobile telephone number that is notassociated with an instant message account or screen name.

The buddy list 402 a also includes a mobile indicator 1810D. The buddylist 402 a also includes an indicator 1810D adjacent to an instantmessage entity listed on the buddy list 402 a positioned to reflect thatthe user account for Steve Clark is configured to send instant messagessent by the Steve Clark entity to a mobile telephone number associatedwith the instant message account of the Steve Clark because the SteveClark entity is offline.

In one implementation, the indicator 1820D shows that the user accountfor the AIMUIUser is configured to send instant messages sent by theAIMUIUser entity to a mobile telephone number associated with theinstant message account of the AIMUIUser when the AIMUIUser entity isoffline. In particular, the indicator 1810D indicates that “Mobile IM isenabled” for the AIMUIUser entity. This may be useful to remind the userthat the user's account is configured to forward instant messages to amobile telephone when the user is offline. In another implementation,the indicator 1820D may be used to reflect whether an instant messageaccount for an entity included in the buddy list 402 a is configured tosend instant message sent to the entity to a mobile telephone numberassociated with the instant message account for the buddy. Thus, theindicator 1820D may be used to reflect the instant message mobileforwarding capability associated with a buddy when the buddy is selectedon the buddy list 402 a. In this other implementation, the indicator1820D would not appear in the interface 1800D when a buddy is selectedon the buddy list 402 a who has not enabled a mobile forwardingcapability for the selected buddy's instant message account.

FIG. 19 illustrates a process 1900 for communicating between twoelectronic devices, such as a client system of an instant messagingservice and a mobile telephone device capable of receiving, processing,displaying and transmitting text-messages. The process 1900 may beperformed, for example, by a processor on the provider system 1710 ofFIG. 17.

The process 1900 begins when a user creates an original message thatincludes an source indicator and an intended destination indicator andthe original message is received by the provider system (step 1910). Theuser, who may be referred to as a sender, may do so using an instantmessaging application to identify a buddy from within their buddy listas the intended destination indicator. Accordingly, the intendeddestination indicator may be, for example, a screen name or a mobiletelephone number of an entity listed on the sender's buddy list.Alternatively, the original message may be a text message created by thesender using an mobile telephone device configured for text messaging,as described later.

Subsequently, the provider system receives a reply message from theintended recipient of the original message (step 1920). The replymessage includes a reply source indicator that indicates an address fromwhich the reply was sent and a reply destination indicator thatindicates an address to which the reply is destined. For example, thereply message may be a text message sent by the mobile telephone deviceto which the original message was delivered.

The provider system optionally determines whether the reply sourceindicator of the reply message is the same as the intended destinationindicator and takes appropriate action based on that determination (step1930). To do so, for example, the provider system may access a messagesession entry that corresponds to the communication and compare thereply source indicator with the destination indicator of the originalmessage received (step 1910). When the reply source indicator isdifferent from the destination indicator, the provider system mayreplace the reply source indicator in the reply message with thedestination indicator of the original message; otherwise, the providersystem need not necessarily take any action.

The provider system sends a communication based on the reply messagewith the communication having a reply source indicator that is the sameas the intended destination indicator identified by the sender of theoriginal message (step 1940). For example, the provider system maycreate an instant message based on a text message sent by from themobile telephone device. The instant message is sent to the destinationindicated in the received reply message or a destination thatcorresponds to the destination indicated in the received reply message,as described later with respect to FIGS. 21-23.

In some implementations, the provider system may replace the replysource indicator with the destination indicator of the original messagewithout first determining whether such action is needed as describedpreviously with respect to step 1930. However, when the reply sourceindicator is the same as the destination indicator, the provider systemmay be replacing the reply source indicator unnecessarily. In someinstances, it may be more efficient for the provider system to do so inlieu of determining whether such action is necessary.

The provider system optionally enables the display of the communicationbased on the reply message (step 1950). This may be accomplished, forexample, by the provider system sending an instant message to the clientsystem for display by the instant messaging application on the clientsystem.

Before discussing additional detail regarding the method by which aninstant message is communicated to a mobile telephone enabled with textmessaging, an example format that may be used for a message sessioninformation entry is first described in FIG. 20. FIG. 20 shows anexample data structure 2000 for a message session information entry insimplified form. The data structure 2000 includes a message sessionidentifier 2010 to uniquely identify each entry in the message sessioninformation. The data structure 2000 also includes an original sender2020 that identifies an original source indicator of the originalinstant message sent by the sender, and an original recipient 2030 thatidentifies an intended destination indicator for the original instantmessage.

The data structure 2000 also includes a temporary reply telephone number2040 that may be used as a source indicator in text messages sent to amobile telephone device based on an instant message directed torecipient 2030. The temporary reply telephone number 2040 also may beused as a destination indicator for a reply text message sent from themobile telephone device in response to text messages sent to the mobiletelephone device based on the original instant message.

The data structure 2000 also includes a destination mobile telephonenumber 2050 that identifies the destination mobile telephone device of atext message sent to the mobile telephone device based on the originalinstant message. The destination mobile telephone number 2050 may beused as a destination indicator in a text message sent to a mobiletelephone device based on a mobile telephone number that is associatedwith the recipient 2030 of the original instant message. Alternatively,the destination mobile telephone number 2050 may correspond to themobile telephone number specified in the buddy list entry or input bycommand line entry, for example, when the original instant message isdirected to a mobile telephone identity such as mobile telephoneidentity 1805D of FIG. 18 or sent using a dialog box or command lineentry to specify a mobile telephone number as the destination addressfor a message initiated via instant messaging.

The data structure 2000 also may include an indication 2060 of adestination type of original instant message—e.g., whether the messageis directed to an instant message account entity (such as a screen name)or a mobile telephone entity. The indication 2060 also may be referredto as a destination flag. An indication of the type of originaldestination may be discerned from information other than the indication2060, enabling confirmation or elimination of indication 2060. Forexample, some implementations may include a destination mobile telephonenumber 2050 only when the recipient 2030 is an instant message entityand the recipient account is associated with a mobile telephone numberto which instant messages are to be sent as text messages. In such acase, a determination of the type of entity that is associated with thedestination of the original instant message may be based on whether thedestination mobile telephone number 2050 is filled in for the entry.Stated differently, some implementations may fill in the destinationmobile telephone number 2050 only when the recipient 2030 is an instantmessage entity (and is not a mobile telephone entity); otherwise, thedestination mobile telephone number 2050 is not filled in (when therecipient 2030 is a mobile telephone entity).

The data structure 2000 also may include a creation timestamp 2070 orother indication of when the message session entry was created, the ageof the entry, or a time when the entry is to expire. The creationtimestamp 2070 may be useful to guide the deletion, expiration, orpurging of aging message session entries in message session information.

FIG. 21 shows a process 2100 by which a client system communicates aninstant message through an instant messaging provider system to a mobiletelephone that is enabled with text messaging capabilities and a replyto the instant message is returned to the client system. The process2100 involves a client system 2105, an instant messaging provider system2110, a cellular system 2180, and a mobile telephone 2170 enabled withtext messaging capabilities. In general, the process 2100 enables aninstant message sent by the client system 2105 to be received andprocessed by the instant messaging provider system 2180, which, in turn,sends a text message based on the instant message to the mobiletelephone 2170 over the cellular system 2180. A user associated with themobile telephone 2170 replies to the text message received by the mobiletelephone 2170. The reply text message is sent from the mobile telephone2170 over the cellular system 2180 to the instant messaging providersystem 2180. The instant messaging provider system 2180 sends to theclient system 2105 a reply instant message based on the reply textmessage received from the mobile telephone 2170. The reply instantmessage includes the intended destination of the original instantmessage as the source indicator of the reply instant message. Thus, thesource indicator of the reply instant message prevents disclosure of anyinformation that was not previously available to, and used by, thesender of the original instant message. This may be useful, for example,to protect a mobile telephone number associated with the intendedrecipient of the original instant message from being revealed to thesender of an instant message when the instant message is forwarded tothe recipient's mobile telephone number by the instant messagingprovider system 2180.

More particularly, a user associated with the client system 2105identifies an intended recipient of the instant message by selecting anentity from the user's buddy list and enters text for the instantmessage, which is received by the client system 2105 (step 2120CL). Theinstant message, as described previously, includes a source indicator ofthe instant message that indicates that the instant message is sent fromthe sender's instant message account. This may be accomplished byidentifying the sender's screen name as the source indicator. Theinstant message also includes a destination indicator that identifiesthe entity selected from the user's buddy list. The selected entity maybe a mobile telephone entity for which a mobile telephone number, ratherthan an instant message user account, is identified as the destinationaddress of the instant message. Alternatively, the selected entity maybe an instant message entity for which a user account of the instantmessage service is identified as the destination address of the instantmessage. The client system 2105 sends the instant message, which may bereferred to as an original instant message, to the instant messagingprovider system 2180 (step 2122CL).

The instant messaging provider system 2180 receives the instant message(step 2122PS) and detects the mobile presence of the intended recipientof the instant message (step 2124PS). Detecting mobile presence mayinclude determining whether the instant message needs to be routed as atext message to a mobile telephone, and determining whether the originalinstant message is addressed to a mobile telephone entity (e.g., amobile telephone entity was selected by the sender of the originalinstant message), which implies the need to route the original instantmessage as a text message to the mobile telephone. When the originalinstant message is addressed to an instant message entity (e.g., ascreen name), the mobile presence of the intended recipient may bedetected based on the offline status of the instant message entity thathas configured the user's instant message account to forward instantmessages to a mobile telephone number. In some implementations, thedetection of mobile presence of the intended recipient may be determinedmerely by querying on-line presence information to determine whether theuser account is associated with a mobile indicator, as previouslydescribed.

In response to detecting the mobile presence of the intended recipient(step 2124PS), the instant messaging provider system 2180 determines amobile telephone number of the intended recipient (step 2126PS). Thismay be accomplished, for example, by accessing a user-device registry,such as user-device registry 1735 of FIG. 17, that associates a mobiletelephone number with a user account when an instant message entity isthe intended recipient of the original instant message. In contrast,when a mobile telephone entity is the intended recipient of the originalinstant message, the mobile telephone number of the entity may bedetermined directly from the entity.

The instant messaging provider system 2180 also determines a temporaryreply telephone number for the text message (step 2128PS), as describedpreviously.

The instant messaging provider system 2180 creates an entry of messagesession information that corresponds to the original instant message(step 2130PS). Using the data structure 2000 as an example, a messagesession identifier 2010 may be assigned to uniquely identify the messagesession entry, the sender indication of the original instant message maybe stored as the original sender 2020, the intended destination may bestored as the original recipient 2030, the temporary reply telephonenumber is stored as the temporary reply telephone number 2040, and thedetermined mobile telephone number may be stored as the destinationmobile telephone number 2050 in the message session entry. Thus in thisexample, when the intended recipient of the original instant message isa mobile telephone entity, the original recipient 2030 and thedestination mobile telephone number 2050 both reflect same mobiletelephone number. When the intended recipient of the original instantmessage is an instant message entity, the original recipient 2030 is thescreen name of the intended recipient and the destination mobiletelephone number 2050 is the mobile telephone number to which the userassociated with the screen name desires instant messages to beforwarded. The indication 2060 of the destination type also is set toindicate that a screen name was identified as the recipient by thesender of the original instant message when the intended recipient ofthe original instant message is an instant message entity. In contrast,when the intended recipient of the original instant message is a mobiletelephone entity, the indication 2060 is set to indicate a mobiletelephone number was identified as the recipient by the sender of theoriginal instant message.

The instant messaging provider system 2180 creates a text message basedon the instant message using the determined mobile telephone number asthe destination address and using the temporary reply telephone numberas the source address (step 2132PS). The instant messaging providersystem 2180 then sends the text message to the cellular system 2180(step 2134PS), which, in turn, receives and sends the text message tothe mobile telephone 2170 (step 2134CES).

The mobile telephone 2170 receives the text message and enables a userof the mobile telephone 2170 to review and respond to the text message(step 2134MT). The mobile telephone 2170 receives, from user input,reply text (step 2136MT) and creates a reply text message using thereply text as the message text, using the mobile telephone number as thereply source address and using the temporary reply telephone number asthe reply destination address (step 2138MT). As is conventional, thereply text message uses the source address of the text message (here,the mobile telephone number of the mobile telephone 2170) as thedestination address of the reply text message. The reply text messageuses the destination address of the text message (here, the temporaryreply telephone number) as the source address of the reply text message.The mobile telephone 2170 then sends the reply text message to thecellular system 2180 (step 2140MT), which, in turn, receives andforwards the reply text message to the instant messaging provider system2180 (step 2140CES). For example, the cellular system 2180 may determinethat the reply text message is to be forwarded to the instant messagingprovider system 2180 based on the temporary reply telephone number inthe reply text message.

The instant messaging provider system 2180 receives the reply textmessage (step 2140PS) and creates a reply instant message based on thereply text message by using the message text as the message text of theinstant message (step 2142PS). The instant messaging provider systemidentifies an entry in the message session information that correspondsto the original instant message that inspired the reply text message(step 2144PS). The entry is identified based on the mobile telephonenumber in the source address of the reply text message and the temporaryreply telephone number in the destination address of the reply textmessage (step 2144PS). This may be accomplished, for example, bysearching message session information for an entry that has a temporaryreply telephone number 2040 that corresponds to the destination addressof the reply text message and a destination mobile telephone number 2050that corresponds to the source address of the reply text message.

The instant messaging provider system 2180 then uses the message sessionentry to determine whether the destination of the original instantmessage was identified by the sender as an instant message account or amobile telephone number (step 2146PS). To do so, the instant messagingprovider system 2180 may access the indication 2060 of the destinationin the message session entry or, alternatively, the instant messagingprovider system 2180 may access the destination mobile telephone number2040 of the message session entry, as described previously.

When the original instant message was directed by the sender to aninstant message entity, the instant messaging provider system 2180 usesthe recipient 2030 of the message session entry as the source address ofthe reply instant message that corresponds to the reply text message(step 2148PS). In contrast, when the original instant message wasdirected by the sender to a mobile telephone entity, the instantmessaging provider system 2180 uses the destination mobile telephonenumber 2050 of the message session entry as the source address of thereply instant message that corresponds to the reply text message (step2150PS). In this case, when the text message was not forwarded by thecellular system to a different mobile telephone number (as may occur,for example, if the mobile telephone 2170 had enabled call forwarding toforward the text message to another mobile telephone number), thedestination mobile telephone number 2050 is the same as the sourceaddress of the reply text message received by the instant messagingprovider system 2180.

In some implementations, in lieu of steps 2144PS-2148PS being performed,the instant messaging provider system 2180 uses the original recipient2030 as the source address of the reply text message received by theinstant messaging provider system 2180. Thus, when the originalrecipient is a mobile telephone entity, the source address indicates themobile telephone of the mobile telephone entity. When the originalrecipient is an instant message entity, the source address indicates thescreen name of the instant message entity and does not indicate themobile telephone number to which the instant message was forwarded.

The instant messaging provider system 2180 then sends the reply instantmessage to the client system (step 2152PS). The client system, in turn,receives and displays the reply instant message for the sender of theoriginal instant message (step 2152CS).

FIGS. 22 and 23 illustrate exemplary messages that may be sent, forexample, using the process 2100 of FIG. 21. FIG. 22 shows a flow 2200 ofexemplary messages inspired by an instant message sent from a clientsystem and directed to an instant message account (e.g., screen name). Amessage session entry 2215 having message session information is createdas part of the process during which the messages are created andprocessed. The entry 2215 is not part of the message flow 2200 but isused to create and process messages in the flow 2200.

The flow 2200 of exemplary messages includes a message 2210 thatrepresents an original instant message sent by a sender from an instantmessage client system to an instant messaging provider system. Theoriginal instant message 2210 is directed to a screen name thatcorresponds to an instant message account for which mobile instantmessage forwarding is enabled. In particular, the screen name to whichthe original instant message is directed is “Steve Clark,” which maycorrespond to the buddy 1810D in the buddy list 1800D of FIG. 18D. Thescreen name of the sender (here, AIMUIUser) is identified as the sourceindicator of the original instant message 2210.

The flow 2200 also includes a message 2220 that represents a textmessage (e.g., an SMS text message) generated based on the originalinstant message 2210. The text message 2220 (which also may be referredto as an original text message) is created by the instant messagingprovider system based on the original instant message using the messagesession entry 2215. The text message 2220 is sent to the cellular systemfor routing to the mobile telephone associated with the intendedrecipient (here, Steve Clark). The text message 2220 identifies themobile telephone number associated with Steve Clark as the destinationaddress and identifies a temporary reply telephone number (describedearlier) as the source address. As illustrated, the temporary replytelephone number is a short code that indicates to the cellular systemthat the messages so identified are to be routed to the instantmessaging provider system.

The flow 2200 also includes a message 2230 that represents a reply textmessage that may be sent from the mobile telephone of Steve Clark to theinstant messaging provider system. The reply text message 2230 iscreated by the mobile telephone in response to user input. The replytext message 2230 identifies the mobile telephone number associated withSteve Clark as the source address and identifies a temporary replytelephone number as the destination address. It is sent from the mobiletelephone to the cellular system, which forwards the reply text messageto the instant messaging provider system based on the destinationaddress in the reply text message.

The flow 2200 also includes a message 2240 that represents a replyinstant message generated based on the reply text message. The replyinstant message 2240 is created by the instant messaging provider systemwith the use of message session entry 2215. The instant messagingprovider system identifies the message session entry 2215 based on thedestination address and source address of the reply text message. Thereply instant message 2210 identifies the recipient of the reply instantmessage as the sender instant message account (here, “AIMUIUser”).Moreover, because the original instant message 2210 identified theintended recipient using a screen name (here, “Steve Clark”), the replyinstant message 2240 identifies the sender of the reply instant messagealso using the same screen name (here, “Steve Clark”). As illustrated bythe flow 2200, the mobile telephone number to which the instant messageis forwarded (and from which the reply text message is generated) ishidden from the sender of the original instant message.

In contrast to FIG. 22, FIG. 23 shows a flow 2300 of exemplary messagesexchanged in the process 2100 that are inspired by an instant messagesent from a client system and directed to a mobile telephone number(e.g., a mobile telephone buddy), and an entry 2315 of message sessioninformation that corresponds to a message session entry created as partof the process 2100. The original instant message 2310 is directed to amobile telephone number. In particular, the mobile telephone numberentity to which the original instant message is directed is“703-123-4567,” which may correspond to the buddy 1805D in the buddylist 1800D of FIG. 18D. The screen name of the sender (here, AIMUIUser)is identified as the source indicator of the original instant message2310, as was the source indicator of the original instant message 2210in FIG. 22.

The flow 2300 also includes an original text message 2230 that is basedon the original instant message 2310. The original text message 2230 iscreated by the instant messaging provider system based on the originalinstant message using the message session entry 2315. The original textmessage 2230 also identifies the mobile telephone number identified asthe recipient account name in the message session entry 2315 to whichthe original instant message was sent as the destination address andidentifies a temporary reply telephone number as the source address. Theoriginal text message 2230 is sent to the cellular system for routing tothe mobile telephone number identified as the destination address (here,“703-123-4567”).

The flow 2300 also includes a message 2330 that represents a reply textmessage that is sent from the mobile telephone associated with themobile telephone number 703-123-4567 to the instant messaging providersystem. The reply text message 2230 identifies the mobile telephonenumber of 703-123-4567 as the source address and identifies thetemporary reply telephone number as the destination address.

The flow 2300 also includes a reply instant message 2340 that is basedon the reply text message 2330. The reply instant message 2340 iscreated by the instant messaging provider system with the use of messagesession entry 2315. The instant messaging provider system identifies themessage session entry 2315 based on the destination address and sourceaddress of the reply text message. Because the original instant message2310 identified the intended recipient as a mobile telephone number(here, “703-123-4567”), the reply instant message 2340 identifies therecipient of the reply instant message also a mobile telephone number(here, “703-123-4567”). The reply instant message 2340 identifies therecipient of the reply instant message as the sender instant messageaccount (here, “AIMUIUser”). As illustrated by the flow 2300, the mobiletelephone number to which the original instant message is directed isthe same as the source indicator of the reply instant message. Thus, inthis example, the identifiers not used by the original sender areobfuscated.

The techniques and concepts described with respect to forwarding aninstant message directed to a screen name to a mobile telephone withoutrevealing the mobile telephone number to which the instant message wasforwarded may be used when the source indicator of an instant message ora destination indicator of an instant message is based on a linkedaccount. Alternatively or additionally, whether the mobile telephonenumber to which an instant message has been forwarded is revealed in areply message may be controlled based on a user preference. In oneexample, a user preferences for a user account may indicate whether theuser associated with the user account desires to reveal a mobiletelephone number. In another example, a user may be prompted whensending a reply to an instant message that has been forwarded todetermine whether the mobile telephone number is to be revealed in thereply. When the user wishes to reveal the mobile telephone number, thesource indicator of the reply instant message indicates the mobiletelephone number to which the original instant message was forwarded andfrom which the reply message originated. This may be accomplished byusing the destination mobile telephone number in the message sessionentry as the source indicator of the reply instant message.Alternatively, the source indicator of the reply instant message maycorrespond to the source address in the reply instant message.

The techniques and concepts of protecting information used to directmessages from being revealed, in a reply message, to a user who is notknown to possess that information have been described in the context offorwarding an original instant message to a mobile telephone as a textmessage. The techniques and concepts may be applicable when a textmessage that originates from a mobile telephone is forwarded to aninstant message service for presentation to an instant messagerecipient. In such a case, when the original text message identifies ascreen name of the instant message recipient, the reply from the instantmessage service that is presented as a reply text message need notobfuscate the screen name of the reply sender. This is because theoriginal text message identified the screen name and the reply thatidentifies the same screen name does not reveal information (here, thescreen name) to the original sender.

Alternatively, when the original text message identifies a mobiletelephone number that is forwarded to an instant message recipient fromwhich a reply is received from the instant message service, the replytext message may obfuscate the screen name of the reply sender. This isbecause the original text message did not identify the screen name ofthe reply sender and a reply text message that identified the screenname of the sender of the reply would reveal information (here, thescreen name) that the sender of the original text message was not knownto possess. The techniques of forwarding electronic messages,particularly those formatted as SMS messages, from a mobile telephonethat is enabled with text messaging capability is described in U.S.application Ser. No. 10/723,040, filed Nov. 26, 2003, and titled“Electronic Message Forwarding,” which is incorporated by reference.

Although the techniques and concepts often are described above in termsof SMS text messaging, the techniques and concepts may be applied toother types of messages, such as a Multimedia Messaging Services (MMS)message, a video message and an audio message. Similarly, the techniquesand concepts have been describe in terms of receiving an instant messageis received at desktop computer receive instant messages addressed tothe instant message identifier. Other electronic devices configured toreceive instant messages may be used, such as a laptop computer, apersonal data assistant (PDA) and a telephone receiver.

The described systems, methods, and techniques may be implemented indigital electronic circuitry, computer hardware, firmware, software, orin combinations of these elements. Apparatus embodying these techniquesmay include appropriate input and output devices, a computer processor,and a computer program product tangibly embodied in a machine-readablestorage device for execution by a programmable processor. A processembodying these techniques may be performed by a programmable processorexecuting a program of instructions to perform desired functions byoperating on input data and generating appropriate output. Thetechniques may be implemented in one or more computer programs that areexecutable on a programmable system including at least one programmableprocessor coupled to receive data and instructions from, and to transmitdata and instructions to, a data storage system, at least one inputdevice, and at least one output device. Each computer program may beimplemented in a high-level procedural or object-oriented programminglanguage, or in assembly or machine language if desired; and in anycase, the language may be a compiled or interpreted language. Suitableprocessors include, by way of example, both general and special purposemicroprocessors. Generally, a processor will receive instructions anddata from a read-only memory and/or a random access memory. Storagedevices suitable for tangibly embodying computer program instructionsand data include all forms of non-volatile memory, including by way ofexample semiconductor memory devices, such as Erasable ProgrammableRead-Only Memory (EPROM), Electrically Erasable Programmable Read-OnlyMemory (EEPROM), and flash memory devices; magnetic disks such asinternal hard disks and removable disks; magneto-optical disks; andCompact Disc Read-Only Memory (CD-ROM). Any of the foregoing may besupplemented by, or incorporated in, specially-designed ASICs(application-specific integrated circuits).

It will be understood that various modifications may be made withoutdeparting from the spirit and scope of the claims. For example,advantageous results still could be achieved if steps of the disclosedtechniques were performed in a different order and/or if components inthe disclosed systems were combined in a different manner and/orreplaced or supplemented by other components. As another example, ascreen name is used throughout to represent a unique identifier of anaccount, but any other unique identifier of an account may be used whenlinking accounts. Accordingly, other implementations are within thescope of the following claims.

1. A method comprising: receiving an identification of a mobiletelephone number to be associated with an electronic messaging account;associating, using at least one processor, the mobile telephone numberwith the electronic messaging account; receiving a first type ofelectronic message addressed to the electronic messaging account; andsending, to a mobile device associated with the mobile telephone number,a second type of electronic message that corresponds to the first typeof electronic message.
 2. The method of claim 1, further comprising:identifying a set of locations at which the electronic messaging accountis active; identifying the mobile device from the identified set oflocations; and determining that the mobile device is available toreceive the second type of electronic message.
 3. The method of claim 2,wherein the set of locations comprises a set of computing devices thatincludes the mobile device.
 4. The method of claim 3, further comprisingsending an electronic message to each computing device in the set ofcomputing devices, wherein the electronic message comprises content ofthe first type of electronic message.
 5. The method of claim 4, furthercomprising determining whether each computing device in the set ofcomputing devices is available to receive the electronic message thatcomprises content of the first type of electronic message.
 6. The methodof claim 2, further comprising determining that the electronic messagingaccount was active most recently at the mobile device.
 7. The method ofclaim 2, further comprising determining that the electronic messagingaccount was active first at the mobile device.
 8. The method of claim 2,wherein the electronic messaging account is active at the identified setof locations based on a determination that the electronic messagingaccount is signed in to a communications system at each of theidentified set of locations.
 9. The method of claim 1, furthercomprising receiving an indication of whether to hide reply sourceindicators for reply electronic messages sent from the electronicmessaging account.
 10. The method of claim 9, further comprisingassociating the indication of whether to hide reply source indicatorswith the electronic messaging account.
 11. The method of claim 10,further comprising: receiving, from the mobile device, a replyelectronic message directed to a sender of the first type of electronicmessage, the reply electronic message having a reply source indicatorthat is different from an intended destination indicator identified bythe sender; if the electronic messaging account indicates to hide replysource indicators, sending a communication based on the reply electronicmessage, the communication having a surrogate reply source indicatorthat is the same as the intended destination indicator; and if theelectronic messaging account does not indicate to hide reply sourceindicators, sending a communication based on the reply electronicmessage, the communication having a surrogate reply source indicatorthat is the same as the reply source indicator.
 12. The method of claim11, wherein the communication comprises an electronic message of a typethat is the same as the first type of electronic message.
 13. The methodof claim 11, wherein the communication comprises an electronic messageof a type that is different from the first electronic message.
 14. Themethod of claim 1, further comprising: assigning a reply telephonenumber to facilitate receipt of reply electronic messages sent from themobile device; sending the reply telephone number to the mobile deviceas part of the second type of electronic message; receiving, from themobile device, a reply electronic message addressed to the replytelephone number; and forwarding the reply electronic message to asender of the first type of electronic message.
 15. A system comprising:at least one processor; and at least one non-transitory computerreadable storage medium storing instructions thereon that, when executedby the at least one processor, cause the system to: receive anidentification of a mobile telephone number to be associated with anelectronic messaging account; associate the mobile telephone number withthe electronic messaging account; receive a first type of electronicmessage addressed to the electronic messaging account; and send, to amobile device associated with the mobile telephone number, a second typeof electronic message that corresponds to the first type of electronicmessage.
 16. The system of claim 15, further comprising instructionsthat, when executed by the at least one processor, cause the system toreceive, from the mobile device, a reply electronic message directed toa sender of the first type of electronic message, the reply electronicmessage having a reply source indicator that is different from anintended destination indicator identified by the sender.
 17. The systemof claim 16, further comprising instructions that, when executed by theat least one processor, cause the system to send a communication basedon the reply electronic message, the communication having a surrogatereply source indicator that is the same as the intended destinationindicator.
 18. The system of claim 16, further comprising instructionsthat, when executed by the at least one processor, cause the system tosend a communication based on the reply electronic message, thecommunication having a surrogate reply source indicator that is the sameas the reply source indicator.
 19. The system of claim 16, furthercomprising instructions that, when executed by the at least oneprocessor, cause the system to send a communication based on the replyelectronic message, the communication having a surrogate reply sourceindicator that comprises the intended destination indicator and thereply source indicator.
 20. The system of claim 19, wherein the intendeddestination indicator comprises a username and the reply sourceindicator comprises the mobile telephone number.